Roll dumping device for cotton gins



Nov. 22, 1938.

J. A. sTREuN 2,137,744

. l ROLL DUMPING DEVICE FOR COTTON (.rINS` Filed July 22, 1936 4Sheets-Sheet l Nov. 2.2, 1938. J. A. s TRE'UN 2,137,744

, ROLL DUMPING DEVICE FOR COTTON GINS Filed' July 22, 1936 4sheets-sheet 2 JM Jaw@ NOV. 22, 1938. 1 Al STREUN 2,137,744

ROLL DUMPING DEVICE FOR COTTON GINS Filed July 22, 195 4 Sheets-Sheet 3Nov. 22, 1938. J. A. sTRl-:UN'l 2,137,744

ROLL DUMPING DEVICE FOR COTTON GINS Filed July 22, 1936 4 Sheets-Sheet`4 Patented Nov. 22, 1938l 2,137,744 I 'ROLL Domme DEVICE ron oo'rroN cmsJohn A. Streun, Sherman Tex., assigner to Hardwicke-Etter Company,Shaman, Tex., a company of Texas applicata@ nay 2a, 193s, serial No.91,975 er claims. (ci. isi-55)" li/iy invention relates to cotton ginsand more particularly to the structure of the roll box and the ginbreast and is a continuation in part of my co-pending application SerialNo. 662,555, hled March 24, 1933. In delivering the cotton to the ginsaws, it is customary to feed the cotton into the gin breast where thehulls are removed and the seed cotton is carried past the hulling ribsinto what is termed the roll box. A roll of seed cotton the full lengthof the gin is formed above the gin saws from which the lint is caught bythe saws and carried past the'ginning ribs, the lint passing out of theginand the seeds and foreign material being delivered down- 15 wardlyout of the gin breast. In handling cotton in this manner, it is foundthat the seed cotton is frequently accompanied by hulls andsticlrs andchaff which accumulate in the roll box until bits ci the trash arehnally caught by the gin go saws and carried around with the lint fromthe gin. This provides a poor sample of cotton,v as the lint is mixedwith pieces of'trash and hulls and is undesirable for that reason.Furthermore, when the cotton and trash have accumulated in the rollvboar, pieces are apt to catch in the ginning ribs and particularly soin case sticks and chad accompany the cotton, so that the spaces betweenthe ribs become clogged with accumulations or foreign matter and cottonlint and eventually the friction resulting from the contact oi the sawsagainst the accumulations in the ribs will cause hre.

It hence becomes necessary to clean the roll box and to remove theaccumulation from the 3,-, ribs of the gin. This has been a dificultoperation'. The old method has involved lifting the forward side of thegin breast away from the roll box by manual labor, so as to obtainaccess to the interior. This takes a material amount of 9 time andrequires the efforts of several workmen.

Furthermore, it is diiiicult, under ordinary circumstances, to get inabove the gin breast even when it is moved forward to get access to thelinterior of the roll box.

15 Itis an object of my invention to provide means. by which the outergin breast may be moved forwardly away from the rearward portion of thebreast so as to open the roll box and allow the roll to be dumped outalong with thetion.

outer breast sections provided with means ior moving the sections as aunit away from the gin saws, and also with means for moving the outersection away from .the inner section when the i inner section ispositioned between the saws or 5 when the sections are moved away fromthe saws so as to provide a passage through which the roll in the rollbox may be discharged downwardly between the separated lower sections.

llt is a further obiectto provide a gin breast lo A door construction sothat access may be vobtained to the interior ci the roll box without thenecessity of moving the entire front oi the gin breast.

li contemplate the provision oi a movable wall or door at the upper/ortion ci the outer gin it breast which may be yung outwardly to openup the roll box andallow convenient access to lin the drawings herewith,Figure l is an end elevation oi" a gin breast and roll bon showing thearrangement oi' parts whereby the gin breast is moved to and fromoperating position.

. Figure 2 is a vertical section through the parts 35 shown in Figure "ishowing the interior oi the box and with the ginbreast in position toremove the roll from the roll box.

Figure 3 is an end view' similar to Figure l showing the mechanism forraising and lowering 4o the gin breast.

Figure 4 is an opposite end view of the gin breast showing the operatinghandle and its associated parts for actuating the gin breasts, in

their closed positions.

Figure 5 lsv-a view similar to Figure 4 with theY operating handle andits associated parts moved to raise the gin breast.

Figure 6 is a detail exploded view of the hinge for the closure, and

Figure '7 is a detail view of the hinged cover connection, in litsopened position. I

I contemplate employing my device in connection with any ordinary makeof cotton gin, and only so much of the cotton gin is shown as is may beoperated in the usual manner by mechanism not shown.

The gin breast 5 is pivotally mounted as at 1 to the gin frame I andpreferably; comprises a `rear member 5 having an upper roll box section6' and a lower section 1' (Figure 2). Associated with the rear member 5'is a movable front or lforward member 8' pivoted as at 8 to the ginbreast and similarly formed with an upper roll box section 9 and a lowersection I0'. The upper sections 6' and A9' constitute the roll box Iwhich preferably is of oval or egg-shape to accommodate the changingpressure on the roll and thus insure the roll turning freely in the rollbox. Due to the particular configuration of the roll box, the roll builtup therein is difficult to break and seldom if ever stops during theoperation of the machine, thus the gin may be effectively used either inartight or loose rolled ginning operation. The arrangement of the ginbreast is such that the center of gravity is inwardly from the point ofsuspension at 8 so that the outer portion of the gin breast is heldinwardly by gravity.

A series of gin ribs 4 are secured at their ends by the screws 6 to therear member 5 of the gin breast and .have their intermediate portionscurved away from the shaftl 2 in the manner as shown in Figure 2. 'I'hefront member 3 of the gin breast carries a series of hulling ribs 9which are positioned below the roll box "I0 and are curved toward thegin saws 3 so that when in their operative position, the saws 3 willpass between the gin ribs 4 and the hulling ribs 9 as indicated inFigure H1. 'I'he lower ends of the hulling rib 3 may be secured to thefront breast member 8 as at and are connected at their upper ends to thesection 3' in any suitable manner such as by screws or athe like notshown. j

The. ginning ribs 4 are placed close together so that the saws 3 whenrunning between them, effectively strip the lint from the seed. The seedescapes between the saws and over the surface of the ribs and isdischarged onto a chute leading from the gin. The'huller ribs 9 carriedby the outer breast member 9' are preferably spaced wider apart than thegin ribs 4. The saws protrude between the ribs and extend into the outerhuller chamber 43 when the gin is in operation as clearly shown in fulllines in Figure 1. It will be seen that asthe picker roll I2 throws thecotton locks against the saws 3, the latter catches the cotton and pullsit through the huller ribs 3 and into the roll box l0. As the cotton ispulled through the ribs, the sticks a'nd burrs are stripped back on thepicker roll which feeds them out of the breasts through a space betweenthe picker rolls |2'and the ribs. During this operation the saws 3 catchany locks of cotton which may attempt to pass between the ribs and rollI2.

Fingers Il carried by a rotatable shaft I3' are positioned directlyabove the huller ribs 9 and are arranged to be raised or lowered by theoperating handle 2 positioned outside of one end of the gin. The fingersII' are so arranged that during the operation of the gin they may beraised to cause the roll of cotton and seed in the roll box I l to betightened and thus the friction of the roll on the saw teethA causesmore lint to be cut from the seed. 0n the other hand, the

ngers I I' may be lowered to produce a lighter4 roll with the resultthat the seed is not as efmay be moved to vary the cleaning of the seedas desired.

The picker or agitator roll I2 is mounted upon the shaft I3 carried inbearings I4 so that it may be adjusted .toward and away-from thegin-saws by means of a rack I5 and a pinion I6 which is operable bymeans of the lever I1 so as to adjust the operating frame I8 upon whichthe roll I2 is supported.

The forward portion of the gin breast when in position as shown inFigure I, closes the lower side of the roll box I0 and in order to beenabled to dump the roll from the roll breast I have provided amechanism to swing the outer part of the gin breast away from the ginsaws so as to control the opening I9 to allow the cotton roll to bedumped out of the roll box.

This mechanism isshown particularly in Figure l. I provide a pair oftoggle levers 20 and 2|. 'Ihe lever 20 is pivoted at its forward end at22 on the outer gin breast, and ata point slightly below the centerthereof. The inner end of the lever 20 is formed Witha semi-circularsocket 22a thereon into which fits a cylindrical end 23 on the lever 2|The rearward end of said lever 2| is pivoted at 24 to the rearwardportion of the gin breast.

'I'he lever 2| is provided with an eyelet 25 adjacent the end 23 toengage with a tension spring 23 which is extended downwardly and securedat its lower end to a post 21 on a forwardly extending lug 23 on therearward portion ofthe gin breast. This spring normally tends tostraighten out the toggle as will be apparent. 'I'he downward movementof the lever 20 is limited by engagement with a post 30 on the end ofthe gin breast as' seen in Figure l. The same movement of the lever 2|is also limited by engagement with a post 3| on the rearward portion ofthe gin breast.

A toggle joint is arranged on opposite sides of A the gin so as to besimultaneously operable by means of a link 32l pivoted at its lower end,as at 33, to the lever 2| at a point spaced from the joint between thelevers 20 and 2| 'I'he upper end of one of the links 32 is connected, asat 34, to an arm 35, which is secured at its lower end to the transverseshaft 36. v'Ihe shaft 36 extends completely across the gin and hassecured to its opposite end an arm 35' pivoted as at 34 to its adjacentlink 32.

The arm 35 is moved through means of a lever arm 31 having a slidingextension 38 thereon, said extension fitting overA the arm 31 and havinga slot 38 through which projects a pin 40 on the arm 31. It will be seenthat upon the movement of the operating ar'm or handle 31, the shaft 36will be rotated to simultaneouslymove the toggle joints at each nend ofthe gin so as to raise or lower the front member 8. l'I'he length of thearm 31 may be increased as desiredV and is limited by engagement of thepin 40 with the ends of the slot in which it moves.

The upper portion of the forward gin breast is also constructed to beaccessible for cleaning and the inner sides to a wall 43 of sheet metalextending along the front of the gin.

The lower end of the front section 9' of the breast may be reinforced bya longitudinal member 44 preferably formed with an upper section 43' anda lower section 44', the lower section having a reduced or cut-out-portion 45 adjacent each of the upper ends thereof into which extendsthe downwardly projecting lugs 45 that straddle the hinge pin 46 carriedby the sides of the breast. The inner surface of the door or closure 4|has an extension or lip 4|' normally arranged to overlap the adjacentinner surface 4a in the manner as shown in Figure 2. It will be seenthat when the door 4| is swung outwardly to the position as shown indotted lines in Figure 2, the door extends across the upper portion ofthe hulling chamber to close the same, thus preventing the seed in theroll box from beingdischarged into the hulling chamber when the door isswung to its open position. Further, the ex tension 4| will bemaintained infrictional engagement with the adjacent upper curvedsurface of the section 44' so as to provide a seal which precludes anyof the material in the roll box. I fromdescaping or working its waybetween or through the hinge. As the lugs 45 are releasably connected tothe pins46 and loosely it within the recess formed between the cut-outportion 45' and the adjacent wall of the gin, the door `4| may bereadily removed from the roll box. The'bolts 41 act as a latch formaintaining the door 4| in its closed position. When it is desired toobtain access to the interior of the roll box Il), the bolts 41 at eachend of the door are Withdrawn so that the latter may be swung back tothe dotted line position as shown in Figure 2.

In the operation of the lever system so as to dump the roll from theroll box, the operator may extend the lever arms 31 and 38,50 as toobtain the proper leverage and may then move the lever forward into itsdotted line position as shown in Figure 1. This will give a down thruston the link 32 and straighten out the toggle levers 20 and 2| into thedotted line position as shown, and

thus move the forward gin breast outwardly into the Figure 2 positionand allow the roll in the roll box to be dumped downwardly and allow thetrash to be entirely removed. If there is material clogging in the ribsof the gin the door 4| may be unlatched and swung open so that accessmay be obtained to the interior of the roll box so as to further removethe accumulations therefrom. v

When the cleaning has been accomplished the levers may be drawn backinto the Figure 1 position allowing the forward gin breast to swing intooperative position and the ginning may then proceed. v

It will be seen that the door 4| may be opened at any time when it isdesirable to obtain access to the roll box and any lint or sticks orforeign matter tending to clog the ribs adjacent the gin saws may beremoved Without difficulty.

The gin breast 5 and its associated parts may v be swung away from thegin saws 3 as seen in vFigure 2 by any suitable mechanism. As shown,

such as by the set screw 54 and has/a depending arm 55 connected as at56 to a coil spring 51 secured at its opposite end to a xed portion ofthe gin. The upper end of the arm 52 is preferably bifurcated as at 58so as to receive the adjacent end of a link 59 which is pivoted theretoby the pin 60. The link 59 adjacent the pin 6|) is provided with anoffset extension or head 6| arranged when the arm 52 and link 59 areextended, to overlap and engage the arm 52. The link 59 is connected tothe rear of the gin breast 5 as at 62.

The other end of the shaft 53 (Figure 3) pro jects beyond the oppositeend of the gin and has connected thereto a lever 63 similar inconstruction and operation to the lever 52. A'coil spring 64 adjust-ablysecured as at 65 to the frame is connected as at 66 to the depending arm61 of the lever B3. A link 68 similar in construction to the link 59 ispivoted as at 69 to the lever 63 andhas a head portion arranged toengage the link 63l when these parts are extended. A brake arm 1|together with the link 68 are pivotally connected to the breast by thebolt 12. The brake arm 1| is provided with a braking surface or portion13 arranged to frictionally engage the pulley 14 on the picker rollershaft I3. A rod -15 is connected at one end to the brake arm 1| andloosely extends through a lug 16 which is pivoted as at 11' to adepending portion of the link 68. A coil spring 11 confined between thelug and the adjustabl nut 18 acts to exert an upward pressure on thebrake arm 1| and its associated parts. i

In operation, the cotton `fed into the hulling chamber 48 is cleaned ofhulls and the like by the picker roll I2 and is thenl drawn by the ginsaws 3 past the hulling ribs 9 into the roll box IIJ where itaccumulates into a roll from which it is drawn by the saws past theginning ribs. When it is desired to dump the roll the handle 50 is swungby the operator from the position shown in -Figure 4 to that disclosedin Figure 5 whereupon the arms 52 and 63 at opposite sides of the ginare simultaneously rotated by the shaft 53,

thus causing the links 59 and 68 to be moved outwardly and the members5' and 8 to be moved Awith the. gin breasts as a unit away from thebreast and its associated parts in their raised positions. The springs51 and 64 act as equa-lizers and tend to facilitate the movement of thebreast f to its raised position upon the actuation of the handle 50.

When the breast has been raised the lever 31 is moved from its full lineposition, Figure 1, to its dotted line position, so as to cause thefront` breast member 8' to be moved outwardly relative to the rearbreast member to form the opening or passage I9 `to permit theunobstructed discharge of the roll from the roll box.

When the breast 5 is in its lower position as shownin Figure 3, thebrake 13 .is held off of the pulley 14 by an adjustable nut 19 thusallowing the pulley to be driven by the belt B9 from the pulley 8| onthe saw shaft 2. Adjustable idler rollers 83 may be provided forcontrolling the stretch of the belt 8D. When the gin is raised and theparts moved to the position asshown in Figure 5. the belt 80 is slackedand the braking surface 13 is applied to pulley 14 with pressure fcreated by the compression of spring 11, thus stopping the pulley 1l theinstant the breast is moved away from the saws 3. The engagement of theheads 6I and 10 with the levers 52 and 63 which takesplace only afterthe levers 52 and 63 and the linksI 59 and 68 move past their deadcenters, constitutes locking means which maintains the breast in itsraised position without danger of it falling and is only released uponthe returning of the handle 50 to its normal operative position as shownin Figure 4. l

As the toggle mechanism for actuating the front breast is separate fromthe means for raising the breasts away from the gin saws, it will beMseen that these instrumentalities may be selectively operated and thatif desired the front breast member 9' may be moved away from the sawswithout affecting the position of the gin breasts. However, in normaloperation the handle 50 is first actuated to raise the breast 5 and itsassociated parts away from the saws 3 and then the lever`31 is loweredto move the outer g no attempt is made to pick the lobes from the burrsand the burr with the-other parts are pulled from the stalk and broughtto the gin so that it is no longer practicable or feasible to gin thecotton straight into the roll as was the early practice. Consequently,the-seed cotton at best is very rough and in order to keep the gradesupto a merchantable point, the cotton is ginned through huller ginsprovided with auxiliary ribs which remove a large percentage of theforeign matter but do not get it all. -As a result this foreign matterenters the roll to be cut by the saws, which means that trash andforeign matter gets into the ginned lint. Manifestly the longer the ginruns the more infested the roll becomes with foreign matter and the moretrash is mixed in the sample.

By reason of the present invention, means 4are provided to make iteasier for the operator to dump the rolls and rid them of this infestedroll of foreign matter, thus raising' the grade of the lint. In orderfor the rolls to be completely clean and the sample be of the bestobtainable grade, the rolls must be dumped a number of timlesl a day.Heretofore, the manual lifting of the parts ofthe gin breast due to theweight thereof, has been very difficult and laborious, consequently theoperators failed to dump the rolls as often as they should with theresult that the majority of the days ginning was of very poor grade andthe samples seriously damaged by the operators inclination to avoid thehard labor and loss of time necessary to dump the rolls. y

It will be seen that the present invention provides two means for easilyand quickly cleaning the rolls, one of which consists in hinging theroll box lid at the .bottom so that the operator may have convenientaccess to the rolls and hand pick the sticks and foreign mattertherefrom. If the operator nds this task too difficult he may resort tothe mechanical roll dump means which merely requires the actuation ofthe levers which control 'the movement of the outer gin breast member l'so that the roll may be dumped or` discharged from t e bottom. 'I'hissimple operation which can be one at the expenditure of very little timemakes the job so easy that all inclinations by the operator tov avoiddumping the rolls will be re- .moved and the quality and grade of thesample will be materially improved. f

Manifestly instead of employing the toggle means shown" for actuatingthe front breast member and the lever construction for raising the ginbreast as a unit away from the saws, any other suitable means may beused for actuating the gin breasts and for moving the front breastmember relative to the rear breast member.

It is to be understood' that the form of the invention shown anddescribed, is merely illustrative of a preferred embodiment and thatsuch changes may be made as fall within the purview of one skilled inthe art without departing from the spirit of the invention and the scopeof the appended claims;

I claim:

1. In a cotton gin. a gin saw cylinder, a gin breast including arearward section and a forward section, a pivotal support for `the upperend of said forward section, said sections being held in engagement bygravity and adapted to'be disengaged by a relative outward movement ofsaid forward section, toggle levers engaging said forward and rearwardsections and pivotally connected together and adapted to be disengagedby relative longitudinal movement, an arm'on said rearward section, alink connecting said arm and one of said levers and a handle on said armwhereby said arm may be moved to operate said toggle to swing the lowerend of said forward section outwardly to discharge material from betweensaid sections, and means to support said levers in alignment when saidforward section is moved away from said rearward section.

2. In a cotton gin, a gin saw cylinder, a gin breast including arearward section and a forward section, an upwardly removable pivotalsupport on the upper end of said forward section, toggle levers engagingsaid forward and rearward sections, a cylindrical knuckle on one end ofone of said `levers engaging within an open socket in the mating end ofthe other of said levers'whereby said levers may bev disengaged,

means to hold said levers aligned when disengaged, an arm on saidrearward section, a link connecting said arm and one of said levers anda handle on said arm whereby said armmay be moved tooperate said toggleto swing the lower end oi' said forward section outwardlyto dis-v chargematerial from between said sections.

3. A cotton gin, a gin saw cylinder, a gin breast, a forward sectionpivotally supported at its upper end and adapted to be detachedtherefrom by relative longitudinal movement of said forward section. aroll box to the rear' of said section above said cylinder. a pair oflongitudinally separable toggle levers connecting said forward sectionto the body of said gin breast, means whereby said toggle levers may bemoved into alignment to move the lower endA of said section forwardlyand open said roll box downwardly, means to support said levers inalignment, and a spring to resist the movement of said levers fromaligned position.

.4. In a cotton gin, a saw cylinder, a gin breast including a forwardsection having a cotton rec eiving chamber, the inner side of which hasa door at its upper end and hulling ribs at its lower end, said doorhaving a hinge member at its lower end including a pair of projectinglugs and a hinge pin upon which said member is supported by gravity,whereby said door may be lifted upwardly away from said pin, and a 'wallon said -door extending downwardly past said hinge on its inner side tohouse said hinge in both open and closed positions of said door.

5. In a cotton gin, a gin breast including a forward section and arearward section, a cotton roll box between said sections, a door onsaid forward section at the forward side of said roll box, a hingethereon at its lower end, said hinge being releasable on an upwardmovement of said door, and an inner wall on said door extendingdownwardly past said hinge to protect said hinge when said door is ineither open or closed position.

6. In a cotton gin, a saw cylinder, a gin breast, a cotton roll boxabove said cylinder, a door on said breast at the forward side of saidroll box, a hinge thereon at its lower end, said hinge being releasableon an upward movement of said door,

and an inner wall on said door extending downwardly past said hinge toprotect said hinge when said door is in either open or closed position.

7. In a double rib cotton gin, a gin breast member having an uppe` rollbox section and a lower ribbed section, a second breast member having anupper roll box section and a lower ribbed section, gin saws normallyextending through the ribs on both of said rib sections, a pivotalmounting on which both sections may be swung to clear the ribs on saidsections from the gin saws, a pivotal mounting for said second breastmember, said second breast member having a closure hinged at its lowerend-thereto, said closure having an extension to seal the 'hinge toprevent material in the roll box from escaping between the hinge whenthe closure is moved relative to the gin breast, and means connected tosaid second breast member to move the same on its pivotal mounting awayfrom the other breast member whereby to provide a passage through which`the roll in the roll box may be discharged downwardly between theseparated lower ribbed surfaces of said members.

8. In a double rib cotton gin, a gin breast member having an uppe'r rollbox section and a lower ribbed section, a second breast member having anupper roll box section and a lower ribbed section,` gin saws normallyextending through the `ribs on both of said rib sections, a pivotalmounting on` which both sections may be swung to clear the ribs on saidsections from the gin saws, a pivotal mounting for said second breastmember, said second breast member having a closure releasably lhinged atits lower end thereto, said closure having an extension to seal thehinge to prevent material in the roll box from escapingbetween the hingewhen the closure is moved relative to the gin breast, and meansconnected to said second breast member to move the same on its pivotalmounting away from the other breast member whereby to provide a passagethrough which the roll in the roll box may be discharged downwardlybetweenA the separated lower ribbed surfaces of said members.

9. In a double rib cotton gin, a gin breast member having an upper rollbox section and a lower ribbed section, a second breast member having anupper roll box section and a lower ribbed section, gin saws normallyextending through the ribs on both of said rib sections, a pivotalmounting on which both sections may be swung to clear the ribs on saidsections from the gin saws, a pivotal mounting for said second breastmember. said second breast member having a closure hinged at its lowerend thereto, said closure adjacent the hinge having an extended portionnormally overlapping the hinge and arranged to cover the same when theclosure is moved relative to the gin so as to provide a seal forpreventing the escape of material from the roll box between the hingejoint, and means connected to said second breast member to move the sameon its pivotal mounting away from the other breast member whereby toprovide a passage through which the roll in the roll box may bedischarged downwardly between the separated lower ribbed surfaces ofsaid members.

10. A gin breast of the class described including a rear breast memberand an outer breast member, and a closure hinged at its lower end to theouter breast member, said closure adjacent the hinge having an extendedportion normally overlapping the hinge and arranged to provide a sealfor preventing the escape of material from the gin breast between thehinge when the closure is moved outwardly relative to the gin breast.11. In a double ribbed cotton gin, a gin breast member having an upperroll box section and a lower ribbed section, a second breast memberhaving an upper roll box section and a lower ribbed section, a gin sawcylinder having saws normally extending through the ribs on both of saidsections, a pivotal mounting on which both sections may be swung toclear the ribs on said vsections from the gin saws, means forsimultaneously moving said sections away from the gin saws and formaintaining the sections in their displaced positions, a separatepivotal mounting for said second breast member, and means connected tosaid second breast member to move the same on its pivotal mounting awayfrom the other breast member while both breast members are clear of thegin saws and to maintain the same in its spaced position whereby toprovide an unobstructed passage-through which the roll in the roll l boxmay be discharged downwardly between the separated members.

12. In a double ribbed cotton gin, a gin breast member having an upperroll box section and a lower ribbed section, a second breast memberhaving an upper roll box section and a lower ribbed section, a gin sawcylinder having saws normally extending through the ribs on both of saidsections, a pivotal mounting on which both sections may be swung toclear the ribs on said sections from the gin saws, hinged members forsimultaneously moving said sections away from the gin saws, means whensaid members are moved past their dead centers to maintain the sectionsin their displaced positions, a separate pivotal mounting for saidsecond breast member, means connected to said second breast member tomove the same on its pivotal mounting away from the other breast member,and means for maintaining the second breast member in spaced relation tothe other breast member while both breast'members are clear of the ginsaws whereby to provide an unobstructed passage through which the rollinthe roll box may be discharged downwardly between the separatedmembers.

13. In a double ribbed cotton gin, a gin breast member having an upperroll box section and a lower ribbed section, a second breast memberhaving an upper roll box section and a -lower ribbed section, gin sawsnormally extending through the ribs on both of said sections, a pivotalmounting on which both sections may be swung to clear the ribs on saidsections from the gin saws, a pivotal mounting for said second breastmember, said second breast member having a closure for the roll boxhinged at its lower end thereto, and means connected to said secondbreast member to move the same on its pivotal mounting away from theotheri breast member whereby to provide a passage through which the rollin the roll box may be discharged downwardly between the separatedmembers.

14. In a double ribbed cotton gin, a gin breast memberl having an upperroll box section and a lower ribbed section, a second breast memberhaving an upper roll box section and a lower ribbed section, gin sawsnormally extending through the ribs n both of said sections, a pivotalmounting on which both sections may be swung to clear the ribs on saidsections from the gin saws, a pivotal mounting for said' second breastmember, a closure for the roll box, said closure being hinged at itslower end to said second breast member and arranged to swing outwardlyrelative thereto, and means connected to said second breast member tomove the same on its pivotal mounting away from the other breast memberwhereby to provide a passage through which the roll in the roll box maybe discharged downwardly between the separated members.

15. In a double ribbed cotton gin, a gin breast member having an upperroll box section and a lower ribbed section, a'second breast memberhaving an upper roll box section and a lower ribbed section and ahulling chamber, gin saws normally extending through the ribs on both ofsaid sections, a pivotal mounting on which both sections may be swung toclear the ribs on said sections from the gin saws, a pivotal mountingfor" said second breast member, a door-hinged to said second breastmember and arranged yto move outwardly across the hulling chamber, andmeans connected to said second breast member to move the same on itspivotal mounting away from the other breast member whereby to provide apassage through which the roll in the roll box may be dischargeddownwardly between the separated members.

16. In a double ribbed cotton gin, a-gin breast. 'member having an upperroll box section and a lower ribbed section, a second breast memberhaving an upper roll box section and a lower ribbed section anda hullingchamber, gin saws normally extending through the ribs on both oi' saidsections a pivotal mounting on which both sections maybe swung to clearthe rlbs on said sections from the gin saws, a pivotal mounting for saidsecond breast member, a doorhinged at its lower end to said secondbreast member and arranged to move outwardly across the hulling chamber,

and means connected to said second breast member to .move the same'onits, lpivotal mounting away from the other breast member whereby toprovide a'passage through which the roll in the roll box may bedischarged downwardlybetween y the separated members.

17. A gin breast of the class described includ-A ing a rear breastmember and an outer breast member, and a closure hinged to the outerybreast member, said closure adjacent the hinge normally overlapping theinner 'wall of the outer breast member and arranged to provide a sealfor preventing the escape of material when the closure the hinge whenthe door is moved relative to the gin breasts. l

19. Ina cotton gin, an inner breast having'an upper roll box section anda lower ribbed section, an outer breast having an upper roll box sectionand a lower ribbed section, a gin saw cylinder having saws normallyextending through the ribs on both oi said sections, a xed upper pivotalmounting for both of said breasts on which said inner breast is directlybut` revolubly mounted and around which both of said breastsconcentrically swing, said breasts being free to move outwardly at theirlower ends, a separate upper pivotal mounting on the inner breast forAthe outer breast, and meanspivotally mounted on the gin and operativelyconnected to the outer breast for moving the latter away from the innerbreast /so as to provide a passage of relatively increased area throughwhich the roll in the roll box may be discharged downwardly between theseparated breasts.

a20. In a cotton gin, an inner breast having an upper roll box sectionand a lower ribbed section, an outer breast having an upper roll boxsection and a lower ribbed section, a gin saw cylinder having sawsnormally extending through the ribs on both of said sections, a iixedupper pivotal mounting for both of said'breasts on which said ,innerbreast is directly but revolubly mounted and around which both of saidbreasts concentrically swing, said breasts being free to move in theroll box may be discharged downwardly between the separated breasts, anoperating mem, ber connected to said means forcontrolling the movementof the outer breast relative to the inner breast, and means forretaining the outer breast i in its opened position.

21. In a cotton gin, an inner breast having anA upper roll box sectionand a lower ribbed section, an outer breast having an upper roll boxsection and a lower ribbed section, a gin saw cylinder. having sawsnormally extending through the ribs on both of said sections, an upperpivotal mounting on the inner breast for the outer breast, and meansmovably mounted, on. the gin and operatively connected to the outerbreast for moving the latter away from the inner breast and for.releasably maintaining the same in its spaced position for any desiredperiod of time so as to provide and maintain a passage of relativelyincreased area through which the roll in the roll box may be dischargeddownwardly between the separated breasts.

22. In a cotton gin, aninner breast having upper roll box section and alower ribbed section, an outer breast having an upper roll box sectionand a lower .ribbed section, a gin saw cylinder having saws normallyextending through the ribs on both of said sections. an upper pivotalmounting on the inner breast for theo ter breast, and manually operablemeans pivota) y mounted on thegin and operatively connected to the outerbreast for moving the latter away from the inner breast and forreleasably maintaining the same in its spaced position for any desiredperiod of time sol as to provide and maintain la passage of relativelyincreased area through which the roll in the roll box may be dischargeddown- 23. In a cotton gin. an inner breast having an upper roll boxsection and a lower ribbed section, anouter breast having an upper rollbox section Aand a lower ribbed section. a gin saw cylinder having sawsnormally lextending Vthrough the ribs yon both of said sections, anupper pivotal mount` ing on the inner breast for the `outer breast.means movabiy mounted on the'gin and operatively connected to the outerbreast for' moving the latter away from the inner breast and forreleasably maintaining the'same in its spaced position locally desiredperiod oi time so as to provide and a passage ol relatively increasedarea through which the roll in the roll bon may be discharged downwardlybetween the separated breasts, said outer breast being provided with ahuiling chamber, and a door pivot/ed at its lower end to the outerbreast, said door ing on the inner breast tor the outer breast,v

means movably mounted 'on the gin and operatively connected to the outerbreast for moving the latter away from the inner breast and forreleasably maintaining thesame in its spaced position for any desiredperiod of time so as to provide and maintain a passage of relativelyy-increasec'l area through which )the roll inthe provided with. ahuiling chamber, a door pivoted I at its lower end tothe outer breast ata point substantially at the horizontal center oi said roll box, saiddoor arranged to swing outwardly across the hulling chamber thuspreventing the materiai in the roll box from discharging into thehuliing chamber when the door is swung to its opened position, andretaining means for holding said door normally in its closed position.

25. In a cotton gin, a gin saw cylinder, a gin breast including arearward section, a forward section pivotaliy supported at its upperend, a hulling chamber in said forward section, and a door hinged to theforward section and arranged to swing outwardly across the huilingchamber, said door having means for providing a seal to prevent materialin the gin :fromA escaping between the hinge when the door is movedrelative to the mln. breast. y

26. In a cotton gin, a gin saw cylinder; a gin breast including arearward section, a movable lcrward section, a huiling chamber in saidforward section; a roll box between said sections: means whereby thelower end of said forward section may be moved forwardly to dump theroll from said roll box; and a door hinged to the forward section andarranged to swing outwardly across the hulling chamber, said door havingmeans lor providing a seal to prevent material in the gin from escapinginto the hinge when the door is moved relative to the gin breast.

27. In a cotton gin, a gin saw cylinder; a gin' breast including arearward section, a movable 'iorward section, a hulling chamber insaid'iorward section; a roll box between said sections; means for movingthe fdrward section away from said rearward sectionito dump the rollfrom the roll box; and a door hinged to the forward section and arrangedto swing outwardly across the hullingchamber, said` door having meansfor providing a seal to prevent materialV in the gin iromescaping intothe hinge when the door iiin moved relative to the gin breast.

JOHN A. STREUN.

